Desolventizing of soybean oil/azeotrope mixtures using ceramic membranes.
Environ Technol
; 38(16): 1969-1979, 2017 Aug.
Article
em En
| MEDLINE
| ID: mdl-27735225
This work investigates the use of ceramic membranes with different molecular weight cut-offs (MWCOs: 5, 10 and 20â
kDa) to desolventize azeotropic solvent mixtures (ethanol/n-hexane and isopropyl alcohol/n-hexane) from soybean oil/azeotrope micelles. Results show that a decrease in the MWCO of a membrane and an increase in the solvent mass ratio in the mixture resulted in a significant reduction in the permeate flux. The 20â
kDa membrane presented the highest permeate flux, 80 and 60â
kg/m2h for the soybean oil/n-hexane/isopropyl alcohol and soybean oil/n-hexane/ethanol azeotropes, respectively, for an oil to solvent ratio of 1:3 (w/w). The highest oil retention was found using the n-hexane/isopropyl alcohol azeotrope, around 25% in the membrane with the lowest MWCO, that is, 5â
kDa. It is shown that the azeotropic mixtures provided intermediate characteristics compared to the original pure solvent behavior.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Óleo de Soja
/
Cerâmica
Idioma:
En
Revista:
Environ Technol
Assunto da revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido